发明授权
- 专利标题： Thermally-assisted magnetic recording head having a waveguide and a return path section
- 专利标题（中）： 具有波导和返回路径部分的热辅助磁记录头
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申请号： US13660479申请日： 2012-10-25
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公开(公告)号： US08498183B1公开(公告)日： 2013-07-30
- 发明人: Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Hironori Araki , Shigeki Tanemura , Ryuji Fujii
- 申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Hironori Araki , Shigeki Tanemura , Ryuji Fujii
- 申请人地址： US CA Milpitas CN Hong Kong
- 专利权人： Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- 当前专利权人： Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- 当前专利权人地址： US CA Milpitas CN Hong Kong
- 代理机构： Oliff & Berridge, PLC
- 主分类号： G11B11/00
- IPC分类号： G11B11/00
摘要：
A thermally-assisted magnetic recording head includes a coil, a main pole, a return path section, a waveguide, and a plasmon generator. The waveguide includes a core and a cladding. The return path section includes: first and second columnar portions located on opposite sides of the core in the track width direction; a coupling portion coupling the first and second columnar portions to each other; and a third columnar portion connected to the coupling portion. The third columnar portion is smaller than the coupling portion in width in the track width direction. The coil includes a winding portion wound around the third columnar portion.
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